Table 3: 100 metaphases were scored for each sample.
Values in parenthesis are percentages ± S.E.
Gaps and polyploidy are not included in aberrant cells.
* P< 0.05 and **P< 0.01.
Table III. Chromosomal aberration frequencies in Smoker and Non-Smoker groups exposed to chromium.
Group
Smokers
Non-Smokers
No. of Examinees
% Aberrant cells ± S.E
No. of Examinees
% Aberrant cells ± S.E
Control
-
62
134(2.16 ± 0.18)
58
60 (1.03 ± 0.13)
Duration of exposure
5-Jan
40
214 (5.35 ± 0.36)**
40
148(3.70 ± 0.30)**
10-Jun
25
194 (7.76 ± 0.55)*
25
148(5.92 ± 0.48)*
15-Nov
15
162 (10.80 ±0.84)*
15
126 (8.40 ± 0.74)*
Total experience
(1-15)
80
570 (7.12 ± 0.29)*
80
422(5.27 ± 0.25)*